Airtac MICJ Adjustable Mini Cylinder MICJ40X25-30
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X25-30 is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 25mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke25 mm
- Port size1/4"
- Acting typeDouble acting, double rod, adjustable stroke + cushion
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MICJ Adjustable Mini Cylinder MICJ40X25-30
Dial in the forward stop on site without swapping cylinders: the MICJ40X25-30 uses an external screw to shorten the extend end position by up to 30 mm, while a needle-set adjustable air cushion at both ends soaks up high-speed shock. This double-acting round-body mini cylinder features a stainless-steel barrel and rod for mild corrosion and washdown resistance.
As the largest bore in the series, the Ø40 delivers serious thrust for a mini format—pushing 628.3 N and pulling 527.8 N at 0.5 MPa. Note this is a non-ISO-6432 size with a 1/4" port and M12x1.25 male rod thread; because this SKU lacks the -S magnet, it cannot take CMSG, DMSG or EMSG sensors.
Airtac MICJ Adjustable Mini Cylinder MICJ40X25-30 Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X25-30 |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 mm |
| Acting type | Double acting, double rod, adjustable stroke + cushion |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Variable air cushion, both ends |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MI/MIC (ISO 6432) datasheet. Barrel & rod: stainless steel (round-body, riveted construction). Thread options: PT (blank) / G. Note: the Ø40 bore is a larger, non-ISO-6432 size.
Theoretical Output Force (Ø40mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa | 739 N |
| Max (@1.0 MPa) | 108 kgf |
MIJ / MICJ are double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
Model Code: Airtac MICJ Adjustable Mini Cylinder MICJ40X25-30
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| -30 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
MI-family variants: MI / MIC (double acting ±cushion), MSI / MTI (single acting push / pull), MID / MICD (double rod ±cushion), MIJ / MICJ (double rod, adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MICJ Adjustable Mini Cylinder MICJ40X25-30 Is Used
Carton Sealing Press
Cycles rapidly to fold flaps on large cartons, relying on the stainless build for washdown durability and the adjustable cushion to prevent end-of-stroke banging.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X25-30 the Right Cylinder?
The adjustable extend stop and dual air cushions shine in fast set-position moves where you must tune the forward impact—running across the 30-800 mm/s speed range. The stop screw sets the end position but is not a mid-stroke lock; the piston drifts on air loss, so specify an external rod lock or pilot check valve to hold a suspended load.
Mounting options include LB foot, FA flange and TC trunnion, plus CA, U, R and CM back covers (the SDB pivot-block is not offered on this adjustable variant). If you need position sensing, select the -S magnet version to enable CMSG, DMSG and EMSG switches.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MICJ Adjustable Mini Cylinder MICJ40X25-30 FAQ
This Ø40 double-acting cylinder has a 1/4" port and M12x1.25 male rod thread. It pushes 628.3 N and pulls 527.8 N at 0.5 MPa; at 0.7 MPa it pushes 879.6 N and pulls 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 30 mm so you can set the forward end position on site, while the adjustable air cushions at both ends decelerate the piston near stroke ends to absorb high-speed shock. The cushions only decelerate and do not lock; the piston drifts on air loss, so use an external rod lock for holding. This non-SKU lacks a magnet, so it cannot take sensors.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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